ASTM D470-05
(Test Method)Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
Standard Test Methods for Crosslinked Insulations and Jackets for Wire and Cable
SIGNIFICANCE AND USE
Physical tests, properly interpreted, provide information with regard to the physical properties of the insulation or jacket. The physical test values give an approximation of how the insulation will physically perform in its service life. Physical tests provide useful data for research and development, engineering design, quality control, and acceptance or rejection under specifications.
SCOPE
1.1 These test methods cover procedures for testing crosslinked insulations and jackets for wire and cable. To determine the test to be made on the particular insulation or jacket, refer to the product specification for that type. These test methods do not apply to the class of products known as flexible cords.
This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazards see Section .
1.2 Whenever two sets of values are presented, in different units, the values in the first set are the standard, while those in the parentheses are for information only.
1.3 In many instances the insulation or jacket cannot be tested unless it has been formed around a conductor or cable. Therefore, tests are done on insulated or jacketed wire or cable in these test methods solely to determine the relevant property of the insulation or jacket and not to test the conductor or completed cable.
1.4 The procedures appear in the following sections:
1.5 This test applies to the detection and measurement of partial discharges occurring in the following types of electric cables:
1.5.1 Single-conductor shielded cables and assemblies thereof, and
1.5.2 Multiple-conductor cables with individually shielded conductors.
1.6 Do not perform these tests on:
1.6.1 Cables which have a nonconductive separator between the conductor and the insulation,
1.6.2 Cables having insulations less than 0.045 in. (1.14 mm) thick, or
1.6.3 Insulations with coverings that are not removable without damage to the insulation.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D470 − 05 AnAmerican National Standard
Standard Test Methods for
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Crosslinked Insulations and Jackets for Wire and Cable
This standard is issued under the fixed designation D470; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 1.5 This standard does not purport to address all of the
safety problems, if any, associated with its use. It is the
1.1 These test methods cover procedures for testing cross-
responsibility of the user of this standard to establish appro-
linked insulations and jackets for wire and cable.To determine
priate safety and health practices and determine the applica-
the test to be made on the particular insulation or jacket, refer
bilityofregulatorylimitationspriortouse.Forspecifichazards
totheproductspecificationforthattype.Thesetestmethodsdo
see Section 4.
not apply to the class of products known as flexible cords.
2. Referenced Documents
1.2 In many instances the insulation or jacket cannot be
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tested unless it has been formed around a conductor or cable.
2.1 ASTM Standards:
Therefore,testsaredoneoninsulatedorjacketedwireorcable
D149Test Method for Dielectric Breakdown Voltage and
in these test methods solely to determine the relevant property
DielectricStrengthofSolidElectricalInsulatingMaterials
of the insulation or jacket and not to test the conductor or
at Commercial Power Frequencies
completed cable.
D150Test Methods forAC Loss Characteristics and Permit-
tivity (Dielectric Constant) of Solid Electrical Insulation
1.3 The procedures appear in the following sections:
D257Test Methods for DC Resistance or Conductance of
Sections
Insulating Materials
AC and DC Voltage Withstand Tests 22 to 29
Capacitance and Dissipation Factor Tests 38 to 44 D412TestMethodsforVulcanizedRubberandThermoplas-
Cold Bend 128
tic Elastomers—Tension
Cold Bend, Long-Time Voltage Test on Short Specimens 51 to 57
D454TestMethodforRubberDeteriorationbyHeatandAir
Double AC Voltage Test on Short Specimens 45 to 50
Electrical Tests of Insulation 17 to 64 Pressure
Heat Distortion Test 127
D572Test Method for Rubber—Deterioration by Heat and
Horizontal Flame Test 100 to 104
Oxygen
Insulation Resistance Tests on Completed Cable 30 to 37
Mineral Filler Content, Determination of 111 to 115
D573Test Method for Rubber—Deterioration in an Air
Ozone Resistance Test 87 to 99
Oven
Partial-Discharge Test 58 to 64
D1193Specification for Reagent Water
Physical Tests of Insulation and Jacket Compounds 5 to 16
Surface Resistivity Test 116 to 120
D1711Terminology Relating to Electrical Insulation
Track Resistance Test 129 to 132
D2132Test Method for Dust-and-Fog Tracking and Erosion
U-Bend Discharge Test 121 to 125
Resistance of Electrical Insulating Materials
Water Absorption Test 65 to 71
Water Absorption Test, Accelerated 72 to 86 D3755Test Method for Dielectric Breakdown Voltage and
Water Absorption Test on Fibrous Coverings 105 to 110
DielectricStrengthofSolidElectricalInsulatingMaterials
Under Direct-Voltage Stress
1.4 Whenever two sets of values are presented, in different
units, the values in the first set are the standard, while those in D5025Specification for Laboratory Burner Used for Small-
Scale Burning Tests on Plastic Materials
the parentheses are for information only.
D5207Practice for Confirmation of 20–mm (50–W) and
125–mm (500–W) Test Flames for Small-Scale Burning
Tests on Plastic Materials
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These test methods are under the jurisdiction of ASTM Committee D09 on
Electrical and Electronic Insulating Materials and are the direct responsibility of
SubcommitteeD09.18onSolidInsulations,Non-MetallicShieldingsandCoverings
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for Electrical and Telecommunication Wires and Cables. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2005. Published September 2005. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1937. Last previous edition approved in 1999 as D470–99. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D0470-05. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D470 − 05
D5423Specification for Forced-Convection Laboratory Ov-
ens for Evaluation of Electrical Insulation
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D470 − 05
2.2 ICEA Standard: 4.3.1 Ozone is a physiologically hazardous gas at elevated
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T-24-
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